wilson



(No Model.)

W. H. WILSON. RAILROAD TIE PLATE.

Patented Sept. 25, 1894. i P

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1 Mg $6 a M a I UNITED STATES @PATENT OFFICE.

WALTER H. WILSON, OF NEW YORK, N. Y., ASSIGNOR TO RICHARD H. SMITH, OF SAME PLACE.

RAILROAD-TIE PLATE.

SPECIFICATION forming part of Letters Patent No. 526,601, dated September 25, 1894.

Application filed April 26,1894. Serial No, 509.110. (No model.)

To all whom it may concern:

ence of moisture, and a further office of such.

ties is to prevent the rail from shearing or grlnding the spike heads, the plate serving to take up and distribute the lateral pressure of the rail.

The object of my invention is to provide an lmproved plate of this character that will have Increased efficiency to the ends enumerated, to promote economy in the manufacture of such plates, to provide a plate that may be quickly and securely applied to the tie, and that will so embed itself in the tie as to cause the fibers of the tie to be so crowded beneath the plate as to afiord a seat of increased elasticity, and further to provide a plate that will effectively resist any tendency to buckle.

The invention consists in the novel .construction hereinafter particularly described and defined in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, 1n which similar letters of reference indicate corresponding parts in all the views.

Figure 1 isa broken plan view showing my lmproved tie plate applied. Fig. 2 is a section taken on line 2-2 in Fig. 1, a part of the tie being shown in side view and partly broken away. Fig. 3 is a plan view of the he plate alone. Fig. 4 is an inverted plan vlew of the plate. Fig. 5 isa section on line 5-5 in Fig. 3; and Fig. 6 isa section on line 6-6 in Fig. 3.

In forming a tie plate, as A, in accordance with my invention, the same is made of the desired dimensions, and its under side is concaved transversely as best seen at a in Fig. 6. The effect of this conformation will be to provide a plate of comparatively light weight and which will yet resist all tendency of the plate to buckle, and further the concaved lines tapering toward the center of the plate will crowd the fibers of the tie toward the center and thereby form a more firm but elastic seat.

The plate at the under side, at each longitudinal edge is formed with two or more blades 5, theside edges of which blades taper from the bases of the blades to a point 1), and preferably also the blades are sharpened to an edge as at W. The blades thus provided, it will readily be seen, will enter and retain a firm hold in the tie B. The holes a for the spikes O, are provided at points in the plate spaced apart sufficient for the spikes to bear by their heads on the flange of the rail D, and in forming the holes 0, I form integral guard projections cl at two sides of such holes, so that side edges d of such projections will be presented to the rail flange, the projections being produced by upsetting the metal of the plate to produce the hole, instead of punching out such metal. By this means economy in manufacture is promoted, and thelugs afford efficient abutments at two sides of each spike which will take up the side thrust of the rail and prevent the shearing of the spike heads.

The blades 12, b, it will be seen are two in number at each side. They range longitudinally of the plate so as to range transversely of the rail, and theirpoints of greatest depth and consequently greatest strength come directly beneath the outer edges of the rail flanges, which is the point at which there is the greatest tendency to buckle.

It will be seen that a light and strong construction is thus obtained, that an eflicient guard is provided for the spikes, and that the plate may be quickly applied and will form a bed for itself in an improved manner.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A tie plate forming on its upper surface a seat for the rail, and having its under surface concaved in the longitudinal direction of the rail seat, the plate having cutting edges at the sides of the concave for entering a tie, substantially as described.

2. A tie plate concaved on itsunder side and having a series of blades ranging longitudinally at each side edge of such surface, substantially as described.

3. A tie plate having depending blades at its under side, along the side edges of the plate, parallel with such side edges, said blades ranging longitudinally of the plate and thus ranging transversely of a rail thereon, the side edges of the blades tapering from the under surface of the plate toa point beneath the line along which the outer edges of the rail flanges are received, thereby presenting their deepest portions to the buckling force of the rails, while affording points for entering a tie, the plate further being concaved longitudinally from one blade to the other, substantially as described.

scribed.

' WALTER H. WILSON. Witnesses:

J NO. M. BITTER, J. L. MOAULIFFE. 

